Disclaimer: I don't own Harry Potter or anything therein. No profit has been made, etc. etc. etc.
Be Jealous
Even though James had cast a silence charm around them, he knew there wasn't anything to keep the bed from rocking silently under them. He was crouched over a writhing Remus, thrusting with all of his might. Taking the boy's legs in his hands, he pulled on Remus' ankles in order to go deeper. Sweat dripped off of James' brow. Remus always howled when he came; now was no exception.
Collapsed in each other's arms, they evened their breathing. "Prongsie, do you think they noticed?"
"What if they did? So what? You're mine. Let them be jealous all they want."